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| author | Arnd Bergmann <arnd@arndb.de> | 2014-09-05 16:53:56 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2014-09-05 16:53:56 +0200 |
| commit | 184df9ddaab4a572e61b321abc079ca49155fc12 (patch) | |
| tree | 5c99704d8508224b25552f24959b54772d8eec1e /fs/nfs/write.c | |
| parent | 647f95fa99b16e7c7854a202e91e6aa22ebeecf4 (diff) | |
| parent | 13298fbbdb3f6a0ef55419dc048e064c7a7b0ef8 (diff) | |
Merge tag 'renesas-kconfig-cleanups-for-v3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/cleanup
Pull "Renesas ARM Based SoC Kconfig Cleanups for v3.18" from Simon Horman:
* Update name of "R-Car M2-W" SoC (previously there was no "-W")
* Consolidate Legacy SH_CLK_CPG and CPU_V7 Kconfig
* Only select PM_RMOBILE for legacy case
* Cleanup pm-rcar.o and pm-rmobile.o build using Kconfig
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* tag 'renesas-kconfig-cleanups-for-v3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
ARM: shmobile: r8a7791 is now called "R-Car M2-W"
ARM: shmobile: Consolidate Legacy SH_CLK_CPG Kconfig
ARM: shmobile: Consolidate Legacy CPU_V7 Kconfig
ARM: shmobile: Only select PM_RMOBILE for legacy case
ARM: shmobile: Cleanup pm-rmobile.o build using Kconfig
ARM: shmobile: Cleanup pm-rcar.o build using Kconfig
ARM: shmobile: Introduce a Kconfig entry for R-Car Gen2
ARM: shmobile: Introduce a Kconfig entry for R-Car Gen1
ARM: shmobile: Introduce a Kconfig entry for R-Mobile
Includes an update to 3.17-rc2 to avoid a dependency
Diffstat (limited to 'fs/nfs/write.c')
| -rw-r--r-- | fs/nfs/write.c | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/fs/nfs/write.c b/fs/nfs/write.c index e3b5cf28bdc..175d5d073cc 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -241,7 +241,7 @@ static bool nfs_page_group_covers_page(struct nfs_page *req) unsigned int pos = 0; unsigned int len = nfs_page_length(req->wb_page); - nfs_page_group_lock(req, true); + nfs_page_group_lock(req, false); do { tmp = nfs_page_group_search_locked(req->wb_head, pos); @@ -478,10 +478,23 @@ try_again: return NULL; } - /* lock each request in the page group */ - ret = nfs_page_group_lock(head, false); - if (ret < 0) + /* holding inode lock, so always make a non-blocking call to try the + * page group lock */ + ret = nfs_page_group_lock(head, true); + if (ret < 0) { + spin_unlock(&inode->i_lock); + + if (!nonblock && ret == -EAGAIN) { + nfs_page_group_lock_wait(head); + nfs_release_request(head); + goto try_again; + } + + nfs_release_request(head); return ERR_PTR(ret); + } + + /* lock each request in the page group */ subreq = head; do { /* |