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authorVikas Gorur <vikas@gluster.com>2009-04-03 05:34:10 -0700
committerAnand V. Avati <avati@amp.gluster.com>2009-04-03 18:13:05 +0530
commitd3d7245970189629937f6330a6d946f5fbb454af (patch)
treeee1f9ccdc619761caa99ce29934ee46b2671f03e
parent75c70231fe7e13a68239dac889568d243a79a75e (diff)
Made afr inode context a 64-bit packed value instead of a structure.
Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
-rw-r--r--xlators/cluster/afr/src/afr-dir-write.c187
-rw-r--r--xlators/cluster/afr/src/afr-inode-read.c122
-rw-r--r--xlators/cluster/afr/src/afr.c187
-rw-r--r--xlators/cluster/afr/src/afr.h22
4 files changed, 205 insertions, 313 deletions
diff --git a/xlators/cluster/afr/src/afr-dir-write.c b/xlators/cluster/afr/src/afr-dir-write.c
index faaf75e45b6..5c6c1473691 100644
--- a/xlators/cluster/afr/src/afr-dir-write.c
+++ b/xlators/cluster/afr/src/afr-dir-write.c
@@ -71,41 +71,6 @@ afr_build_parent_loc (loc_t *parent, loc_t *child)
parent->ino = parent->inode->ino;
}
-
-afr_inode_ctx_t *
-afr_get_inode_ctx (xlator_t *this, inode_t *inode)
-{
- afr_inode_ctx_t * inode_ctx = NULL;
- uint64_t ctx;
-
- int ret = 0;
-
- LOCK (&inode->lock);
- {
- ret = __inode_ctx_get (inode, this, &ctx);
-
- if (ret < 0) {
- inode_ctx = CALLOC (1, sizeof (afr_inode_ctx_t));
-
- ret = __inode_ctx_put (inode, this,
- (uint64_t)(long) inode_ctx);
-
- if (ret < 0) {
- gf_log (this->name, GF_LOG_ERROR,
- "could not set inode ctx");
- FREE (inode_ctx);
- inode_ctx = NULL;
- }
- } else {
- inode_ctx = (afr_inode_ctx_t *)(long) ctx;
- }
- }
- UNLOCK (&inode->lock);
-
- return inode_ctx;
-}
-
-
/* {{{ create */
int
@@ -144,8 +109,6 @@ afr_create_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
afr_local_t * local = NULL;
afr_private_t * priv = NULL;
- afr_inode_ctx_t * inode_ctx = NULL;
-
int call_count = -1;
int child_index = -1;
@@ -169,26 +132,22 @@ afr_create_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
priv->child_count,
child_index);
- inode_ctx = afr_get_inode_ctx (this, inode);
-
- if (inode_ctx) {
- if (priv->read_child >= 0) {
- inode_ctx->read_child = priv->read_child;
- } else {
- inode_ctx->read_child = local->read_child_index;
- }
+ if (priv->read_child >= 0) {
+ afr_set_read_child (this, inode,
+ priv->read_child);
+ } else {
+ afr_set_read_child (this, inode,
+ local->read_child_index);
}
}
if (child_index == local->read_child_index) {
- inode_ctx = afr_get_inode_ctx (this, inode);
-
- if (inode_ctx) {
- if (priv->read_child >= 0) {
- inode_ctx->read_child = priv->read_child;
- } else {
- inode_ctx->read_child = local->read_child_index;
- }
+ if (priv->read_child >= 0) {
+ afr_set_read_child (this, inode,
+ priv->read_child);
+ } else {
+ afr_set_read_child (this, inode,
+ local->read_child_index);
}
}
@@ -379,8 +338,6 @@ afr_mknod_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
afr_local_t * local = NULL;
afr_private_t * priv = NULL;
- afr_inode_ctx_t * inode_ctx = NULL;
-
int call_count = -1;
int child_index = -1;
@@ -404,26 +361,22 @@ afr_mknod_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
priv->child_count,
child_index);
- inode_ctx = afr_get_inode_ctx (this, inode);
-
- if (inode_ctx) {
- if (priv->read_child >= 0) {
- inode_ctx->read_child = priv->read_child;
- } else {
- inode_ctx->read_child = local->read_child_index;
- }
+ if (priv->read_child >= 0) {
+ afr_set_read_child (this, inode,
+ priv->read_child);
+ } else {
+ afr_set_read_child (this, inode,
+ local->read_child_index);
}
}
if (child_index == local->read_child_index) {
- inode_ctx = afr_get_inode_ctx (this, inode);
-
- if (inode_ctx) {
- if (priv->read_child >= 0) {
- inode_ctx->read_child = priv->read_child;
- } else {
- inode_ctx->read_child = local->read_child_index;
- }
+ if (priv->read_child >= 0) {
+ afr_set_read_child (this, inode,
+ priv->read_child);
+ } else {
+ afr_set_read_child (this, inode,
+ local->read_child_index);
}
}
@@ -610,8 +563,6 @@ afr_mkdir_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
afr_local_t * local = NULL;
afr_private_t * priv = NULL;
- afr_inode_ctx_t * inode_ctx = NULL;
-
int call_count = -1;
int child_index = -1;
@@ -633,27 +584,23 @@ afr_mkdir_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
local->cont.mkdir.buf.st_ino =
afr_itransform (buf->st_ino, priv->child_count,
child_index);
-
- inode_ctx = afr_get_inode_ctx (this, inode);
-
- if (inode_ctx) {
- if (priv->read_child >= 0) {
- inode_ctx->read_child = priv->read_child;
- } else {
- inode_ctx->read_child = local->read_child_index;
- }
+
+ if (priv->read_child >= 0) {
+ afr_set_read_child (this, inode,
+ priv->read_child);
+ } else {
+ afr_set_read_child (this, inode,
+ local->read_child_index);
}
}
if (child_index == local->read_child_index) {
- inode_ctx = afr_get_inode_ctx (this, inode);
-
- if (inode_ctx) {
- if (priv->read_child >= 0) {
- inode_ctx->read_child = priv->read_child;
- } else {
- inode_ctx->read_child = local->read_child_index;
- }
+ if (priv->read_child >= 0) {
+ afr_set_read_child (this, inode,
+ priv->read_child);
+ } else {
+ afr_set_read_child (this, inode,
+ local->read_child_index);
}
}
@@ -843,8 +790,6 @@ afr_link_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
afr_local_t * local = NULL;
afr_private_t * priv = NULL;
- afr_inode_ctx_t * inode_ctx = NULL;
-
int call_count = -1;
int child_index = -1;
@@ -867,26 +812,22 @@ afr_link_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
afr_itransform (buf->st_ino, priv->child_count,
child_index);
- inode_ctx = afr_get_inode_ctx (this, inode);
-
- if (inode_ctx) {
- if (priv->read_child >= 0) {
- inode_ctx->read_child = priv->read_child;
- } else {
- inode_ctx->read_child = local->read_child_index;
- }
+ if (priv->read_child >= 0) {
+ afr_set_read_child (this, inode,
+ priv->read_child);
+ } else {
+ afr_set_read_child (this, inode,
+ local->read_child_index);
}
}
if (child_index == local->read_child_index) {
- inode_ctx = afr_get_inode_ctx (this, inode);
-
- if (inode_ctx) {
- if (priv->read_child >= 0) {
- inode_ctx->read_child = priv->read_child;
- } else {
- inode_ctx->read_child = local->read_child_index;
- }
+ if (priv->read_child >= 0) {
+ afr_set_read_child (this, inode,
+ priv->read_child);
+ } else {
+ afr_set_read_child (this, inode,
+ local->read_child_index);
}
}
@@ -1074,8 +1015,6 @@ afr_symlink_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
afr_local_t * local = NULL;
afr_private_t * priv = NULL;
- afr_inode_ctx_t * inode_ctx = NULL;
-
int call_count = -1;
int child_index = -1;
@@ -1098,26 +1037,22 @@ afr_symlink_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
afr_itransform (buf->st_ino, priv->child_count,
child_index);
- inode_ctx = afr_get_inode_ctx (this, inode);
-
- if (inode_ctx) {
- if (priv->read_child >= 0) {
- inode_ctx->read_child = priv->read_child;
- } else {
- inode_ctx->read_child = local->read_child_index;
- }
+ if (priv->read_child >= 0) {
+ afr_set_read_child (this, inode,
+ priv->read_child);
+ } else {
+ afr_set_read_child (this, inode,
+ local->read_child_index);
}
}
if (child_index == local->read_child_index) {
- inode_ctx = afr_get_inode_ctx (this, inode);
-
- if (inode_ctx) {
- if (priv->read_child >= 0) {
- inode_ctx->read_child = priv->read_child;
- } else {
- inode_ctx->read_child = local->read_child_index;
- }
+ if (priv->read_child >= 0) {
+ afr_set_read_child (this, inode,
+ priv->read_child);
+ } else {
+ afr_set_read_child (this, inode,
+ local->read_child_index);
}
}
diff --git a/xlators/cluster/afr/src/afr-inode-read.c b/xlators/cluster/afr/src/afr-inode-read.c
index 97b429049c7..c7a7e99879d 100644
--- a/xlators/cluster/afr/src/afr-inode-read.c
+++ b/xlators/cluster/afr/src/afr-inode-read.c
@@ -119,9 +119,8 @@ afr_access (call_frame_t *frame, xlator_t *this,
int call_child = 0;
afr_local_t *local = NULL;
- afr_inode_ctx_t * inode_ctx = NULL;
- uint64_t ctx;
- int ret = 0;
+ int32_t read_child = -1;
+
int32_t op_ret = -1;
int32_t op_errno = 0;
@@ -137,19 +136,10 @@ afr_access (call_frame_t *frame, xlator_t *this,
ALLOC_OR_GOTO (local, afr_local_t, out);
- ret = inode_ctx_get (loc->inode, this,
- &ctx);
- if (ret < 0) {
- op_errno = EINVAL;
- gf_log (this->name, GF_LOG_ERROR,
- "inode ctx not set!");
- goto out;
- }
-
- inode_ctx = (afr_inode_ctx_t *)(long) ctx;
-
- if (inode_ctx->read_child >= 0) {
- call_child = inode_ctx->read_child;
+ read_child = afr_read_child (this, loc->inode);
+
+ if (read_child >= 0) {
+ call_child = read_child;
local->cont.access.last_tried = -1;
@@ -249,10 +239,7 @@ afr_stat (call_frame_t *frame, xlator_t *this,
afr_local_t * local = NULL;
xlator_t ** children = NULL;
- afr_inode_ctx_t * inode_ctx = NULL;
- uint64_t ctx;
- int ret = 0;
-
+ int32_t read_child = -1;
int call_child = 0;
int32_t op_ret = -1;
@@ -271,19 +258,10 @@ afr_stat (call_frame_t *frame, xlator_t *this,
frame->local = local;
- ret = inode_ctx_get (loc->inode, this,
- &ctx);
- if (ret < 0) {
- op_errno = EINVAL;
- gf_log (this->name, GF_LOG_ERROR,
- "inode ctx not set!");
- goto out;
- }
-
- inode_ctx = (afr_inode_ctx_t *)(long) ctx;
+ read_child = afr_read_child (this, loc->inode);
- if (inode_ctx->read_child >= 0) {
- call_child = inode_ctx->read_child;
+ if (read_child >= 0) {
+ call_child = read_child;
local->cont.stat.last_tried = -1;
@@ -386,10 +364,7 @@ afr_fstat (call_frame_t *frame, xlator_t *this,
xlator_t ** children = NULL;
int call_child = 0;
-
- afr_inode_ctx_t * inode_ctx = NULL;
- uint64_t ctx;
- int ret = 0;
+ int32_t read_child = -1;
int32_t op_ret = -1;
int32_t op_errno = 0;
@@ -410,20 +385,10 @@ afr_fstat (call_frame_t *frame, xlator_t *this,
VALIDATE_OR_GOTO (fd->inode, out);
- ret = inode_ctx_get (fd->inode, this,
- &ctx);
-
- if (ret < 0) {
- op_errno = EINVAL;
- gf_log (this->name, GF_LOG_ERROR,
- "inode ctx not set!");
- goto out;
- }
-
- inode_ctx = (afr_inode_ctx_t *)(long) ctx;
+ read_child = afr_read_child (this, fd->inode);
- if (inode_ctx->read_child >= 0) {
- call_child = inode_ctx->read_child;
+ if (read_child >= 0) {
+ call_child = read_child;
local->cont.fstat.last_tried = -1;
} else {
@@ -521,9 +486,7 @@ afr_readlink (call_frame_t *frame, xlator_t *this,
int call_child = 0;
afr_local_t *local = NULL;
- afr_inode_ctx_t * inode_ctx = NULL;
- uint64_t ctx;
- int ret = 0;
+ int32_t read_child = -1;
int32_t op_ret = -1;
int32_t op_errno = 0;
@@ -541,19 +504,10 @@ afr_readlink (call_frame_t *frame, xlator_t *this,
frame->local = local;
- ret = inode_ctx_get (loc->inode, this,
- &ctx);
- if (ret < 0) {
- op_errno = EINVAL;
- gf_log (this->name, GF_LOG_ERROR,
- "inode ctx not set!");
- goto out;
- }
-
- inode_ctx = (afr_inode_ctx_t *)(long) ctx;
+ read_child = afr_read_child (this, loc->inode);
- if (inode_ctx->read_child >= 0) {
- call_child = inode_ctx->read_child;
+ if (read_child >= 0) {
+ call_child = read_child;
local->cont.readlink.last_tried = -1;
@@ -652,9 +606,7 @@ afr_getxattr (call_frame_t *frame, xlator_t *this,
int call_child = 0;
afr_local_t * local = NULL;
- afr_inode_ctx_t * inode_ctx = NULL;
- uint64_t ctx;
- int ret = 0;
+ int read_child = -1;
int32_t op_ret = -1;
int32_t op_errno = 0;
@@ -671,19 +623,10 @@ afr_getxattr (call_frame_t *frame, xlator_t *this,
ALLOC_OR_GOTO (local, afr_local_t, out);
frame->local = local;
- ret = inode_ctx_get (loc->inode, this, &ctx);
-
- if (ret < 0) {
- op_errno = EINVAL;
- gf_log (this->name, GF_LOG_ERROR,
- "inode ctx not set!");
- goto out;
- }
-
- inode_ctx = (afr_inode_ctx_t *)(long) ctx;
+ read_child = afr_read_child (this, loc->inode);
- if (inode_ctx->read_child >= 0) {
- call_child = inode_ctx->read_child;
+ if (read_child >= 0) {
+ call_child = read_child;
local->cont.getxattr.last_tried = -1;
} else {
@@ -804,10 +747,7 @@ afr_readv (call_frame_t *frame, xlator_t *this,
afr_local_t * local = NULL;
xlator_t ** children = NULL;
- afr_inode_ctx_t * inode_ctx = NULL;
- uint64_t ctx;
- int ret = 0;
-
+ int32_t read_child = -1;
int call_child = 0;
int32_t op_ret = -1;
@@ -825,20 +765,10 @@ afr_readv (call_frame_t *frame, xlator_t *this,
frame->local = local;
- ret = inode_ctx_get (fd->inode, this,
- &ctx);
-
- if (ret < 0) {
- op_errno = EINVAL;
- gf_log (this->name, GF_LOG_ERROR,
- "inode ctx not set!");
- goto out;
- }
-
- inode_ctx = (afr_inode_ctx_t *)(long) ctx;
+ read_child = afr_read_child (this, fd->inode);
- if (inode_ctx->read_child >= 0) {
- call_child = inode_ctx->read_child;
+ if (read_child >= 0) {
+ call_child = read_child;
/*
if read fails from the read child, we try
diff --git a/xlators/cluster/afr/src/afr.c b/xlators/cluster/afr/src/afr.c
index e3526087ae7..76e28cc4c52 100644
--- a/xlators/cluster/afr/src/afr.c
+++ b/xlators/cluster/afr/src/afr.c
@@ -53,6 +53,100 @@
#include "afr-self-heal.h"
+uint64_t
+afr_is_split_brain (xlator_t *this, inode_t *inode)
+{
+ int ret = 0;
+
+ uint64_t ctx = 0;
+ uint64_t split_brain = 0;
+
+ LOCK (&inode->lock);
+ {
+ ret = __inode_ctx_get (inode, this, &ctx);
+
+ if (ret < 0)
+ goto unlock;
+
+ split_brain = ctx & 0xFFFFFFFF00000000ULL;
+ }
+unlock:
+ UNLOCK (&inode->lock);
+
+ return split_brain;
+}
+
+
+void
+afr_set_split_brain (xlator_t *this, inode_t *inode, int32_t split_brain)
+{
+ uint64_t ctx = 0;
+ int ret = 0;
+
+ LOCK (&inode->lock);
+ {
+ ret = __inode_ctx_get (inode, this, &ctx);
+
+ if (ret < 0) {
+ ctx = 0;
+ }
+
+ ctx = (0x00000000FFFFFFFFULL & ctx)
+ | (split_brain & 0xFFFFFFFF00000000ULL);
+
+ __inode_ctx_put (inode, this, ctx);
+ }
+ UNLOCK (&inode->lock);
+}
+
+
+uint64_t
+afr_read_child (xlator_t *this, inode_t *inode)
+{
+ int ret = 0;
+
+ uint64_t ctx = 0;
+ uint64_t read_child = 0;
+
+ LOCK (&inode->lock);
+ {
+ ret = __inode_ctx_get (inode, this, &ctx);
+
+ if (ret < 0)
+ goto unlock;
+
+ read_child = ctx & 0x00000000FFFFFFFFULL;
+ }
+unlock:
+ UNLOCK (&inode->lock);
+
+ return read_child;
+}
+
+
+void
+afr_set_read_child (xlator_t *this, inode_t *inode, int32_t read_child)
+{
+ uint64_t ctx = 0;
+ int ret = 0;
+
+ LOCK (&inode->lock);
+ {
+ ret = __inode_ctx_get (inode, this, &ctx);
+
+ if (ret < 0) {
+ ctx = 0;
+ }
+
+ ctx = (0xFFFFFFFF00000000ULL & ctx)
+ | (0x00000000FFFFFFFFULL & read_child);
+
+ __inode_ctx_put (inode, this, ctx);
+ }
+ UNLOCK (&inode->lock);
+}
+
+
/**
* afr_local_cleanup - cleanup everything in frame->local
*/
@@ -306,24 +400,17 @@ afr_self_heal_cbk (call_frame_t *frame, xlator_t *this)
afr_local_t *local = NULL;
int ret = -1;
- afr_inode_ctx_t * inode_ctx = NULL;
- uint64_t ctx;
-
local = frame->local;
- ret = inode_ctx_get (local->cont.lookup.inode, this, &ctx);
-
- inode_ctx = (afr_inode_ctx_t *)(long) ctx;
-
if (local->govinda_gOvinda) {
- inode_ctx->split_brain = 1;
+ afr_set_split_brain (this, local->cont.lookup.inode, 1);
if (ret < 0) {
local->op_ret = -1;
local->op_errno = -ret;
}
} else {
- inode_ctx->split_brain = 0;
+ afr_set_split_brain (this, local->cont.lookup.inode, 0);
}
AFR_STACK_UNWIND (frame, local->op_ret, local->op_errno,
@@ -349,9 +436,6 @@ afr_lookup_cbk (call_frame_t *frame, void *cookie,
uint32_t open_fd_count = 0;
int ret = 0;
- afr_inode_ctx_t * inode_ctx = NULL;
- uint64_t ctx;
-
child_index = (long) cookie;
priv = this->private;
@@ -412,16 +496,15 @@ afr_lookup_cbk (call_frame_t *frame, void *cookie,
lookup_buf->st_ino = afr_itransform (buf->st_ino,
priv->child_count,
child_index);
-
- ret = inode_ctx_get (local->cont.lookup.inode, this,
- &ctx);
-
- inode_ctx = (afr_inode_ctx_t *)(long) ctx;
-
+
if (priv->read_child >= 0) {
- inode_ctx->read_child = priv->read_child;
+ afr_set_read_child (this,
+ local->cont.lookup.inode,
+ priv->read_child);
} else {
- inode_ctx->read_child = child_index;
+ afr_set_read_child (this,
+ local->cont.lookup.inode,
+ child_index);
}
} else {
@@ -446,15 +529,14 @@ afr_lookup_cbk (call_frame_t *frame, void *cookie,
priv->child_count,
child_index);
- ret = inode_ctx_get (local->cont.lookup.inode, this,
- &ctx);
-
- inode_ctx = (afr_inode_ctx_t *)(long) ctx;
-
if (priv->read_child >= 0) {
- inode_ctx->read_child = priv->read_child;
+ afr_set_read_child (this,
+ local->cont.lookup.inode,
+ priv->read_child);
} else {
- inode_ctx->read_child = local->read_child_index;
+ afr_set_read_child (this,
+ local->cont.lookup.inode,
+ local->read_child_index);
}
}
@@ -505,12 +587,8 @@ unlock:
if (local->success_count) {
/* check for split-brain case in previous lookup */
- ret = inode_ctx_get (local->cont.lookup.inode, this,
- &ctx);
-
- inode_ctx = (afr_inode_ctx_t *)(long) ctx;
-
- if (inode_ctx->split_brain)
+ if (afr_is_split_brain (this,
+ local->cont.lookup.inode))
local->need_data_self_heal = 1;
}
@@ -550,9 +628,6 @@ afr_lookup (call_frame_t *frame, xlator_t *this,
int32_t op_errno = 0;
- afr_inode_ctx_t *inode_ctx = NULL;
- uint64_t ctx;
-
priv = this->private;
ALLOC_OR_GOTO (local, afr_local_t, out);
@@ -563,30 +638,6 @@ afr_lookup (call_frame_t *frame, xlator_t *this,
loc_copy (&local->loc, loc);
- ret = inode_ctx_get (loc->inode, this, &ctx);
- inode_ctx = (afr_inode_ctx_t *)(long) ctx;
-
- if (ret < 0) {
- inode_ctx = CALLOC (1, sizeof (afr_inode_ctx_t));
-
- if (!inode_ctx) {
- op_errno = ENOMEM;
- gf_log (this->name, GF_LOG_ERROR,
- "out of memory :(");
- goto out;
- }
-
- ret = inode_ctx_put (loc->inode, this,
- (uint64_t)(long) inode_ctx);
-
- if (ret < 0) {
- op_errno = EINVAL;
- gf_log (this->name, GF_LOG_ERROR,
- "could not set inode ctx");
- goto out;
- }
- }
-
LOCK (&priv->read_child_lock);
{
local->read_child_index = (++priv->read_child_rr)
@@ -708,9 +759,6 @@ afr_open (call_frame_t *frame, xlator_t *this,
afr_private_t * priv = NULL;
afr_local_t * local = NULL;
- afr_inode_ctx_t * inode_ctx = NULL;
- uint64_t ctx;
-
int i = 0;
int ret = -1;
@@ -726,18 +774,7 @@ afr_open (call_frame_t *frame, xlator_t *this,
priv = this->private;
- ret = inode_ctx_get (loc->inode, this, &ctx);
-
- if (ret < 0) {
- gf_log (this->name, GF_LOG_ERROR,
- "inode ctx not set!");
- op_errno = EINVAL;
- goto out;
- }
-
- inode_ctx = (afr_inode_ctx_t *)(long) ctx;
-
- if (inode_ctx->split_brain) {
+ if (afr_is_split_brain (this, loc->inode)) {
/* self-heal failed */
gf_log (this->name, GF_LOG_WARNING,
diff --git a/xlators/cluster/afr/src/afr.h b/xlators/cluster/afr/src/afr.h
index a447b74f47b..ac1a5f6ad18 100644
--- a/xlators/cluster/afr/src/afr.h
+++ b/xlators/cluster/afr/src/afr.h
@@ -394,22 +394,6 @@ typedef struct _afr_local {
} afr_local_t;
-typedef struct {
- /*
- split-brain situation in which afr
- can do nothing
- */
- gf_boolean_t split_brain;
-
- /*
- subvolume from which all reads should
- happen for this inode
- */
- int read_child;
-
-} afr_inode_ctx_t;
-
-
/* try alloc and if it fails, goto label */
#define ALLOC_OR_GOTO(var, type, label) do { \
var = CALLOC (sizeof (type), 1); \
@@ -430,6 +414,12 @@ typedef struct {
/* have we tried all children? */
#define all_tried(i, count) ((i) == (count) - 1)
+uint64_t
+afr_read_child (xlator_t *this, inode_t *inode);
+
+void
+afr_set_read_child (xlator_t *this, inode_t *inode, int32_t read_child);
+
void
afr_build_parent_loc (loc_t *parent, loc_t *child);