From 9af36b95976d4e54859c9b60bd2e711518b3be6e Mon Sep 17 00:00:00 2001 From: Krutika Dhananjay Date: Mon, 2 May 2016 16:51:10 +0530 Subject: core, shard: Make shards inherit main file's O_DIRECT flag if present Backport of: http://review.gluster.org/14191 If the application opens a file with O_DIRECT, the shards' anon fds would also need to inherit the flag. Towards this, shard xl would be passing the odirect flag in the @flags parameter to the WRITEV fop. This will be used in anon fd resolution and subsequent opening by posix xl. Change-Id: I3a0593fa46cc25e390a5762a0354b469c2a1532d BUG: 1342903 Signed-off-by: Krutika Dhananjay Reviewed-on: http://review.gluster.org/14663 Smoke: Gluster Build System CentOS-regression: Gluster Build System NetBSD-regression: NetBSD Build System Reviewed-by: Jeff Darcy --- libglusterfs/src/fd.c | 41 +++++++++++++++++++++++++++++++++-------- libglusterfs/src/fd.h | 4 +++- 2 files changed, 36 insertions(+), 9 deletions(-) (limited to 'libglusterfs') diff --git a/libglusterfs/src/fd.c b/libglusterfs/src/fd.c index 7d9a0cc1c5e..89ba357fc1e 100644 --- a/libglusterfs/src/fd.c +++ b/libglusterfs/src/fd.c @@ -749,7 +749,7 @@ fd_lookup_uint64 (inode_t *inode, uint64_t pid) } static fd_t * -__fd_lookup_anonymous (inode_t *inode) +__fd_lookup_anonymous (inode_t *inode, int32_t flags) { fd_t *iter_fd = NULL; fd_t *fd = NULL; @@ -758,7 +758,7 @@ __fd_lookup_anonymous (inode_t *inode) return NULL; list_for_each_entry (iter_fd, &inode->fd_list, inode_list) { - if (iter_fd->anonymous) { + if ((iter_fd->anonymous) && (flags == iter_fd->flags)) { fd = __fd_ref (iter_fd); break; } @@ -768,11 +768,11 @@ __fd_lookup_anonymous (inode_t *inode) } static fd_t * -__fd_anonymous (inode_t *inode) +__fd_anonymous (inode_t *inode, int32_t flags) { fd_t *fd = NULL; - fd = __fd_lookup_anonymous (inode); + fd = __fd_lookup_anonymous (inode, flags); /* if (fd); then we already have increased the refcount in __fd_lookup_anonymous(), so no need of one more fd_ref(). @@ -785,7 +785,7 @@ __fd_anonymous (inode_t *inode) return NULL; fd->anonymous = _gf_true; - fd->flags = GF_ANON_FD_FLAGS; + fd->flags = GF_ANON_FD_FLAGS|flags; __fd_bind (fd); @@ -803,7 +803,32 @@ fd_anonymous (inode_t *inode) LOCK (&inode->lock); { - fd = __fd_anonymous (inode); + fd = __fd_anonymous (inode, GF_ANON_FD_FLAGS); + } + UNLOCK (&inode->lock); + + return fd; +} + +fd_t * +fd_anonymous_with_flags (inode_t *inode, int32_t flags) +{ + fd_t *fd = NULL; + + LOCK (&inode->lock); + { + if (flags == 0) + flags = GF_ANON_FD_FLAGS; + /* If this API is ever called with O_SYNC or O_DSYNC in @flags, + * reset the bits associated with these flags before calling + * __fd_anonymous(). That way, posix will do the open() without + * these flags. And subsequently, posix_writev() (mostly) will + * do the write within inode->lock on an fd without O_SYNC or + * O_DSYNC and in its place to an fsync() outside of the locks + * to simulate the effect of using these flags. + */ + flags &= (~(O_SYNC|O_DSYNC)); + fd = __fd_anonymous (inode, flags); } UNLOCK (&inode->lock); @@ -811,7 +836,7 @@ fd_anonymous (inode_t *inode) } fd_t* -fd_lookup_anonymous (inode_t *inode) +fd_lookup_anonymous (inode_t *inode, int32_t flags) { fd_t *fd = NULL; @@ -823,7 +848,7 @@ fd_lookup_anonymous (inode_t *inode) LOCK (&inode->lock); { - fd = __fd_lookup_anonymous (inode); + fd = __fd_lookup_anonymous (inode, flags); } UNLOCK (&inode->lock); return fd; diff --git a/libglusterfs/src/fd.h b/libglusterfs/src/fd.h index f4a8c444198..45c9303084f 100644 --- a/libglusterfs/src/fd.h +++ b/libglusterfs/src/fd.h @@ -138,11 +138,13 @@ fd_t * fd_lookup_uint64 (struct _inode *inode, uint64_t pid); fd_t* -fd_lookup_anonymous (inode_t *inode); +fd_lookup_anonymous (inode_t *inode, int32_t flags); fd_t * fd_anonymous (inode_t *inode); +fd_t * +fd_anonymous_with_flags (inode_t *inode, int32_t flags); gf_boolean_t fd_is_anonymous (fd_t *fd); -- cgit