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Diffstat (limited to 'fs/xfs/xfs_file.c')
-rw-r--r--fs/xfs/xfs_file.c95
1 files changed, 65 insertions, 30 deletions
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index 13e974e6a889..a2e1cb8a568b 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -36,6 +36,7 @@
#include "xfs_trace.h"
#include "xfs_log.h"
#include "xfs_icache.h"
+#include "xfs_pnfs.h"
#include <linux/aio.h>
#include <linux/dcache.h>
@@ -127,6 +128,42 @@ xfs_iozero(
return (-status);
}
+int
+xfs_update_prealloc_flags(
+ struct xfs_inode *ip,
+ enum xfs_prealloc_flags flags)
+{
+ struct xfs_trans *tp;
+ int error;
+
+ tp = xfs_trans_alloc(ip->i_mount, XFS_TRANS_WRITEID);
+ error = xfs_trans_reserve(tp, &M_RES(ip->i_mount)->tr_writeid, 0, 0);
+ if (error) {
+ xfs_trans_cancel(tp, 0);
+ return error;
+ }
+
+ xfs_ilock(ip, XFS_ILOCK_EXCL);
+ xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
+
+ if (!(flags & XFS_PREALLOC_INVISIBLE)) {
+ ip->i_d.di_mode &= ~S_ISUID;
+ if (ip->i_d.di_mode & S_IXGRP)
+ ip->i_d.di_mode &= ~S_ISGID;
+ xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
+ }
+
+ if (flags & XFS_PREALLOC_SET)
+ ip->i_d.di_flags |= XFS_DIFLAG_PREALLOC;
+ if (flags & XFS_PREALLOC_CLEAR)
+ ip->i_d.di_flags &= ~XFS_DIFLAG_PREALLOC;
+
+ xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
+ if (flags & XFS_PREALLOC_SYNC)
+ xfs_trans_set_sync(tp);
+ return xfs_trans_commit(tp, 0);
+}
+
/*
* Fsync operations on directories are much simpler than on regular files,
* as there is no file data to flush, and thus also no need for explicit
@@ -360,7 +397,8 @@ STATIC int /* error (positive) */
xfs_zero_last_block(
struct xfs_inode *ip,
xfs_fsize_t offset,
- xfs_fsize_t isize)
+ xfs_fsize_t isize,
+ bool *did_zeroing)
{
struct xfs_mount *mp = ip->i_mount;
xfs_fileoff_t last_fsb = XFS_B_TO_FSBT(mp, isize);
@@ -388,6 +426,7 @@ xfs_zero_last_block(
zero_len = mp->m_sb.sb_blocksize - zero_offset;
if (isize + zero_len > offset)
zero_len = offset - isize;
+ *did_zeroing = true;
return xfs_iozero(ip, isize, zero_len);
}
@@ -406,7 +445,8 @@ int /* error (positive) */
xfs_zero_eof(
struct xfs_inode *ip,
xfs_off_t offset, /* starting I/O offset */
- xfs_fsize_t isize) /* current inode size */
+ xfs_fsize_t isize, /* current inode size */
+ bool *did_zeroing)
{
struct xfs_mount *mp = ip->i_mount;
xfs_fileoff_t start_zero_fsb;
@@ -428,7 +468,7 @@ xfs_zero_eof(
* We only zero a part of that block so it is handled specially.
*/
if (XFS_B_FSB_OFFSET(mp, isize) != 0) {
- error = xfs_zero_last_block(ip, offset, isize);
+ error = xfs_zero_last_block(ip, offset, isize, did_zeroing);
if (error)
return error;
}
@@ -488,6 +528,7 @@ xfs_zero_eof(
if (error)
return error;
+ *did_zeroing = true;
start_zero_fsb = imap.br_startoff + imap.br_blockcount;
ASSERT(start_zero_fsb <= (end_zero_fsb + 1));
}
@@ -518,6 +559,10 @@ restart:
if (error)
return error;
+ error = xfs_break_layouts(inode, iolock);
+ if (error)
+ return error;
+
/*
* If the offset is beyond the size of the file, we need to zero any
* blocks that fall between the existing EOF and the start of this
@@ -526,13 +571,15 @@ restart:
* having to redo all checks before.
*/
if (*pos > i_size_read(inode)) {
+ bool zero = false;
+
if (*iolock == XFS_IOLOCK_SHARED) {
xfs_rw_iunlock(ip, *iolock);
*iolock = XFS_IOLOCK_EXCL;
xfs_rw_ilock(ip, *iolock);
goto restart;
}
- error = xfs_zero_eof(ip, *pos, i_size_read(inode));
+ error = xfs_zero_eof(ip, *pos, i_size_read(inode), &zero);
if (error)
return error;
}
@@ -699,7 +746,7 @@ xfs_file_buffered_aio_write(
iov_iter_truncate(from, count);
/* We can write back this queue in page reclaim */
- current->backing_dev_info = mapping->backing_dev_info;
+ current->backing_dev_info = inode_to_bdi(inode);
write_retry:
trace_xfs_file_buffered_write(ip, count, iocb->ki_pos, 0);
@@ -784,8 +831,9 @@ xfs_file_fallocate(
{
struct inode *inode = file_inode(file);
struct xfs_inode *ip = XFS_I(inode);
- struct xfs_trans *tp;
long error;
+ enum xfs_prealloc_flags flags = 0;
+ uint iolock = XFS_IOLOCK_EXCL;
loff_t new_size = 0;
if (!S_ISREG(inode->i_mode))
@@ -794,7 +842,11 @@ xfs_file_fallocate(
FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE))
return -EOPNOTSUPP;
- xfs_ilock(ip, XFS_IOLOCK_EXCL);
+ xfs_ilock(ip, iolock);
+ error = xfs_break_layouts(inode, &iolock);
+ if (error)
+ goto out_unlock;
+
if (mode & FALLOC_FL_PUNCH_HOLE) {
error = xfs_free_file_space(ip, offset, len);
if (error)
@@ -822,6 +874,8 @@ xfs_file_fallocate(
if (error)
goto out_unlock;
} else {
+ flags |= XFS_PREALLOC_SET;
+
if (!(mode & FALLOC_FL_KEEP_SIZE) &&
offset + len > i_size_read(inode)) {
new_size = offset + len;
@@ -839,28 +893,10 @@ xfs_file_fallocate(
goto out_unlock;
}
- tp = xfs_trans_alloc(ip->i_mount, XFS_TRANS_WRITEID);
- error = xfs_trans_reserve(tp, &M_RES(ip->i_mount)->tr_writeid, 0, 0);
- if (error) {
- xfs_trans_cancel(tp, 0);
- goto out_unlock;
- }
-
- xfs_ilock(ip, XFS_ILOCK_EXCL);
- xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
- ip->i_d.di_mode &= ~S_ISUID;
- if (ip->i_d.di_mode & S_IXGRP)
- ip->i_d.di_mode &= ~S_ISGID;
-
- if (!(mode & (FALLOC_FL_PUNCH_HOLE | FALLOC_FL_COLLAPSE_RANGE)))
- ip->i_d.di_flags |= XFS_DIFLAG_PREALLOC;
-
- xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
- xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
-
if (file->f_flags & O_DSYNC)
- xfs_trans_set_sync(tp);
- error = xfs_trans_commit(tp, 0);
+ flags |= XFS_PREALLOC_SYNC;
+
+ error = xfs_update_prealloc_flags(ip, flags);
if (error)
goto out_unlock;
@@ -874,7 +910,7 @@ xfs_file_fallocate(
}
out_unlock:
- xfs_iunlock(ip, XFS_IOLOCK_EXCL);
+ xfs_iunlock(ip, iolock);
return error;
}
@@ -1384,5 +1420,4 @@ static const struct vm_operations_struct xfs_file_vm_ops = {
.fault = filemap_fault,
.map_pages = filemap_map_pages,
.page_mkwrite = xfs_vm_page_mkwrite,
- .remap_pages = generic_file_remap_pages,
};
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-07 06:37:50 +0300